Great Big Sea is another of my favourite bands. Russell Crowe is an awesome actor, but I've never really heard him sing before. I know he has his own band, just never heard them play.
Alan Doyle from Great Big Sea and Russell Crowe have recorded an album together. The Crowe/Doyle Songbook, Vol.III. Don't bother looking for volumes I and II. They don't exist.
I wasn't sure what to expect. Great Big Sea, I know I like, but this is not GBS. Anyway I had an iTunes gift card burning a hole in my pocket. So I downloaded it. And? I like it. The female voice you hear in the songs is Danielle Spencer, Crowe's wife. Check it out.